2 * Test code for x86 CPUID and Topology functions
4 * Copyright (c) 2012 Red Hat Inc.
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27 #include "hw/i386/topology.h"
29 static void test_topo_bits(void)
31 /* simple tests for 1 thread per core, 1 core per socket */
32 g_assert_cmpuint(apicid_smt_width(1, 1), ==, 0);
33 g_assert_cmpuint(apicid_core_width(1, 1), ==, 0);
35 g_assert_cmpuint(x86_apicid_from_cpu_idx(1, 1, 0), ==, 0);
36 g_assert_cmpuint(x86_apicid_from_cpu_idx(1, 1, 1), ==, 1);
37 g_assert_cmpuint(x86_apicid_from_cpu_idx(1, 1, 2), ==, 2);
38 g_assert_cmpuint(x86_apicid_from_cpu_idx(1, 1, 3), ==, 3);
41 /* Test field width calculation for multiple values
43 g_assert_cmpuint(apicid_smt_width(1, 2), ==, 1);
44 g_assert_cmpuint(apicid_smt_width(1, 3), ==, 2);
45 g_assert_cmpuint(apicid_smt_width(1, 4), ==, 2);
47 g_assert_cmpuint(apicid_smt_width(1, 14), ==, 4);
48 g_assert_cmpuint(apicid_smt_width(1, 15), ==, 4);
49 g_assert_cmpuint(apicid_smt_width(1, 16), ==, 4);
50 g_assert_cmpuint(apicid_smt_width(1, 17), ==, 5);
53 g_assert_cmpuint(apicid_core_width(30, 2), ==, 5);
54 g_assert_cmpuint(apicid_core_width(31, 2), ==, 5);
55 g_assert_cmpuint(apicid_core_width(32, 2), ==, 5);
56 g_assert_cmpuint(apicid_core_width(33, 2), ==, 6);
59 /* build a weird topology and see if IDs are calculated correctly
62 /* This will use 2 bits for thread ID and 3 bits for core ID
64 g_assert_cmpuint(apicid_smt_width(6, 3), ==, 2);
65 g_assert_cmpuint(apicid_core_width(6, 3), ==, 3);
66 g_assert_cmpuint(apicid_pkg_offset(6, 3), ==, 5);
68 g_assert_cmpuint(x86_apicid_from_cpu_idx(6, 3, 0), ==, 0);
69 g_assert_cmpuint(x86_apicid_from_cpu_idx(6, 3, 1), ==, 1);
70 g_assert_cmpuint(x86_apicid_from_cpu_idx(6, 3, 2), ==, 2);
72 g_assert_cmpuint(x86_apicid_from_cpu_idx(6, 3, 1 * 3 + 0), ==,
74 g_assert_cmpuint(x86_apicid_from_cpu_idx(6, 3, 1 * 3 + 1), ==,
76 g_assert_cmpuint(x86_apicid_from_cpu_idx(6, 3, 1 * 3 + 2), ==,
79 g_assert_cmpuint(x86_apicid_from_cpu_idx(6, 3, 2 * 3 + 0), ==,
81 g_assert_cmpuint(x86_apicid_from_cpu_idx(6, 3, 2 * 3 + 1), ==,
83 g_assert_cmpuint(x86_apicid_from_cpu_idx(6, 3, 2 * 3 + 2), ==,
86 g_assert_cmpuint(x86_apicid_from_cpu_idx(6, 3, 5 * 3 + 0), ==,
88 g_assert_cmpuint(x86_apicid_from_cpu_idx(6, 3, 5 * 3 + 1), ==,
90 g_assert_cmpuint(x86_apicid_from_cpu_idx(6, 3, 5 * 3 + 2), ==,
93 g_assert_cmpuint(x86_apicid_from_cpu_idx(6, 3, 1 * 6 * 3 + 0 * 3 + 0), ==,
95 g_assert_cmpuint(x86_apicid_from_cpu_idx(6, 3, 1 * 6 * 3 + 1 * 3 + 1), ==,
96 (1 << 5) | (1 << 2) | 1);
97 g_assert_cmpuint(x86_apicid_from_cpu_idx(6, 3, 3 * 6 * 3 + 5 * 3 + 2), ==,
98 (3 << 5) | (5 << 2) | 2);
101 int main(int argc, char **argv)
103 g_test_init(&argc, &argv, NULL);
105 g_test_add_func("/cpuid/topology/basic", test_topo_bits);